04-20-2018 09:46 AM
I am currently using XAxiDma Device driver to forward packets from PS to PL. Adapting the examples, i could send a bunch of packets to DMA until i run out of Buffer Descriptors (i am in Scatter Gather Mode). The problem is i need to send an infinite ammount of packets and thus i need to reuse the buffer descriptors somehow... Can anyone tell me how can i make the last BD point back to the first one and reuse all the BDs?
05-22-2018 10:44 AM
I think you are asking about the AXI DMA IP. AXI DMA does support cyclic mode where you can re-use buffer descriptors. Please review PG021 for details.